\usepackage{calc,color}
\newif\ifNoChapNumber
\newcommand\Vlines{%
\def\VL{\rule[-2cm]{1pt}{5cm}\hspace{1mm}\relax}
\VL\VL\VL\VL\VL\VL\VL}
\makeatletter
\setlength\midchapskip{0pt}
\makechapterstyle{VZ43}{
	\renewcommand\chapternamenum{}
	\renewcommand\printchaptername{}
	\renewcommand\printchapternum{}
	\renewcommand\chapnumfont{\Huge\bfseries\centering}
	\renewcommand\chaptitlefont{\Huge\bfseries\raggedright}
	\renewcommand\printchaptertitle[1]{%
		\Vlines\hspace*{-2em}%
		\begin{tabular}{@{}p{1cm} p{\textwidth-3cm}}%
			\ifNoChapNumber\relax\else%
			\colorbox{black}{\color{white}%
			\makebox[.8cm]{\chapnumfont\strut \thechapter}}
			\fi
			& \chaptitlefont ##1
		\end{tabular}
		\NoChapNumberfalse
	}
	\renewcommand\printchapternonum{\NoChapNumbertrue}
}
\makeatother
\chapterstyle{VZ43}